linux-kernel - Re: [PATCH AUTOSEL 4.19 094/258] nfp: add locking around representor changes

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20190128082825.4c8394a6@cakuba.hsd1.ca.comcast.net>
Date:   Mon, 28 Jan 2019 08:28:25 -0800
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     Sasha Levin <sashal@...nel.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        "David S . Miller" <davem@...emloft.net>,
        oss-drivers@...ronome.com, netdev@...r.kernel.org
Subject: Re: [PATCH AUTOSEL 4.19 094/258] nfp: add locking around
 representor changes

On Mon, 28 Jan 2019 10:56:40 -0500, Sasha Levin wrote:
> From: Jakub Kicinski <jakub.kicinski@...ronome.com>
> 
> [ Upstream commit 71844fac1ed459024dd2a448d63d5b28b8c87daa ]
> 
> Up until now we never needed to keep a networking locks around
> representors accesses, we only accessed them when device was
> reconfigured (under nfp pf->lock) or on fast path (under RCU).
> Now we want to be able to iterate over all representors during
> notifications, so make sure representor assignment is done
> under RTNL lock.
> 
> Signed-off-by: Jakub Kicinski <jakub.kicinski@...ronome.com>
> Reviewed-by: John Hurley <john.hurley@...ronome.com>
> Signed-off-by: David S. Miller <davem@...emloft.net>
> Signed-off-by: Sasha Levin <sashal@...nel.org>

Hi Sasha!

There is no need for backporting this unless 51a6588e8c08 ("nfp: add
offloads on representors") is also back ported (which is a feature).